Scope recent searches to project

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/31902

app/assets/javascripts/filtered_search/filtered_search_manager.js

@@ -16,10 +16,13 @@ class FilteredSearchManager {
     this.recentSearchesStore = new RecentSearchesStore({
       isLocalStorageAvailable: RecentSearchesService.isAvailable(),
     });
-    let recentSearchesKey = 'issue-recent-searches';
+    const searchHistoryDropdownElement = document.querySelector('.js-filtered-search-history-dropdown');
+    const projectPath = searchHistoryDropdownElement.dataset.projectFullPath;
+    let recentSearchesPagePrefix = 'issue-recent-searches';
     if (page === 'merge_requests') {
-      recentSearchesKey = 'merge-request-recent-searches';
+      recentSearchesPagePrefix = 'merge-request-recent-searches';
     }
+    const recentSearchesKey = `${projectPath}-${recentSearchesPagePrefix}`;
     this.recentSearchesService = new RecentSearchesService(recentSearchesKey);
     // Fetch recent searches from localStorage
@@ -47,7 +50,7 @@ class FilteredSearchManager {
       this.recentSearchesRoot = new RecentSearchesRoot(
         this.recentSearchesStore,
         this.recentSearchesService,
-        document.querySelector('.js-filtered-search-history-dropdown'),
+        searchHistoryDropdownElement,
       );
       this.recentSearchesRoot.init();

app/views/shared/issuable/_search_bar.html.haml

@@ -19,7 +19,7 @@
               dropdown_class: "filtered-search-history-dropdown",
               content_class: "filtered-search-history-dropdown-content",
               title: "Recent searches" }) do
-              .js-filtered-search-history-dropdown
+              .js-filtered-search-history-dropdown{ data: { project_full_path: @project.full_path } }
           .filtered-search-box-input-container
             .scroll-container
               %ul.tokens-container.list-unstyled

changelogs/unreleased/31902-namespace-recent-searches-to-project.yml

+---
+title: Scope issuable recent searches to project
+merge_request:
+author: